The Lennox G61 is a discontinued two-stage, high-efficiency gas furnace with an efficiency rating of up to 95.0% AFUE. It featured an aluminized steel Duralok Plus heat exchanger, with a stainless steel secondary heat exchanger. A low-speed continuous fan setting delivered improved air quality, while an insulated blower compartment reduced operating sounds. The unit was protected by a steel cabinet with a polyester, textured paint finish designed to resist corrosion.
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